Then you understand the complexities. The Aryan Brotherhood used a simple word code in written letters to send information from and to prisons. Took .gov years to figure it out.
It would help if FRiends understood code basics.
To me the most important basic code is the cipher’s shape. Normally it’s a ring with all twenty six letters. It’s not hard to make one customized for each code. And you can spin it around to match the word once you work out the code.
But with ‘auto correct’ [such as control+h] you don’t need to worry about them.